An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 12948 Search : far
nonionized
  نایونیده   
nâyonidé (#)

Fr.: non-ionisé   

The quality of an atom that has neither lost nor gained any electrons.

non-; → ionized.

nonlinear
  ناخطی   
nâxatti (#)

Fr.: non-linéaire   

Not a linear function of the relevant variables.
Containing a variable with an exponent other than one; opposite of → linear.

non-; → linear.

nonlinear device
  دستگاه ِ ناخطی   
dastgâh-e nâxatti

Fr.: dispositif non-linéaire   

An electronic device whose output is not directly proportional to its input. For example, in a → diode the current is a nonlinear function of the voltage; its voltage-current characteristics do not obey → Ohm's law.

nonlinear; → device.

nonlinear dynamics
  توانیک ِ ناخطی   
tavânik-e nâxatti

Fr.: dynamique non-linéaire   

Same as → chaos.

nonlinear; → dynamics.

nonlinear instability
  ناپایداری ِ ناخطی   
nâpâydâri-ye nâxatti

Fr.: instabilité non-linéaire   

The instability of a physical or mathematical system that arises from the nonlinear nature of relevant variables and their interactions within the system.

nonlinear; → instability.

nonlinear system
  راژمان ِ ناخطی   
râžmân-e nâxatti

Fr.: système non-linéaire   

A system in which small changes can result in large effects, and large changes in small effects.

nonlinear; → system.

nonlinearity
  ناخطیگی   
nâxattigi

Fr.: non-linéarité   

The property, condition, or state of being → nonlinear.

non-; → linearity.

nonrising star
  ستاره‌ی ِ همیشه‌پنهان   
setâre-ye hamiše penhân (#)

Fr.:   

A star that is never seen above the horizon from a given position. These stars are located between the celestial pole and a diurnal circle with an angular distance larger than the altitude of the pole.

Nonrising, from → non- + rising adj. of → rise; → star.

Setâré, → star; hamiše penhân, literally "always hidden," coined by Biruni (A.D. 973-1050) in his at-Tafhim, from hamišé "always" (Mid.Pers. hamêšag "always") + penhân "hidden."

nonsense
  جفنگ   
jafang (#)

Fr.: non sense   

Word or language having no meaning. → absurd.

non- + → sense.

Jafang "nonsense, futile."

nonsetting star
  ستاره‌ی ِ همیشه‌پیدا   
setâre-ye hamiše peydâ (#)

Fr.:   

A star that is always seen above the horizon from a given position. These stars are located between the celestial pole and a diurnal circle with an angular distance smaller than the altitude of the pole. Same as → circumpolar star.

Nonsetting, from → non- + setting adj. of → set; → star.

Setâré, → star; hamiše peydâ literally "always visible," coined by Biruni (A.D. 973-1050) in his at-Tafhim, from hamišé "always," → perpetual, + peydâ, → visible.

nonsingular matrix
  ماتریس ِ ناتکین   
mâtris-e nâtakin

Fr.: matrice non singulière   

A → square matrix that is not a → singular matrix.

non-; → singular; → matrix.

nonviscous
  ناوشکسان   
nâvošksân

Fr.: non visqueux   

Fluid mechanics: Having no → viscosity. Same as → inviscid.

From → non- + → viscous.

noon
  نیمروز   
nimruz (#)

Fr.: midi   

The time of day when the Sun crosses the observer's meridian and is at its highest point above the horizon. At this point, the Sun lies due south of an observer in the northern hemisphere and due north of an observer in the southern hemisphere.

M.E. none; O.E. non, from L. nona hora "ninth hour" of daylight by Roman reckoning, about 3 p.m.

Nimruz, from nim "mid-, half" (Mid.Pers. nêm, nêmag "half;" Av. naēma- "half;" cf. Sk. néma- "half") + ruzday.

norm
  هنجار   
hanjâr (#)

Fr.: norme   

General: A standard, model, or pattern regarded as typical.
Math.: 1) The magnitude of a vector expressed as the square root of the sum of the squares of the absolute values of the components of the vector.
2) The value that has the highest frequency within a statistical range.

From Fr. norme, from O.Fr., from L. norma "carpenter's square, rule, pattern," of unknown origin.

Hanjâr "a straight road; way, rule, law; habit, custom; conduct; a mason's rule, a plumb-line, a level;" Mid.Pers. hanjâr "right, correct;" from Proto-Iranian *ham-cara-, *han-cara- prefixed *cara- "to move, walk" (cf. Av. car- "to move, go, walk," carāni "I would go," carāt "he would go;" Mod.Pers. caridan "to graze," gozârdan "to explain," gozâreš "explanation"); cf. Skt. samcara- "passage, way, road, path; going about, moving," from prefix sam- + cara- "moving, going, walking;" Gk. pelomai "to move;" L. colere "to till, cultivate, inhabit."

Norma
  گونیا   
Guniyâ (#)

Fr.: Règle   

The Carpenter's Square. A small and inconspicuous southern constellation which lies between → Scorpius and → Centaurus. Its brightest star is only of magnitude 4.0. Abbreviation: Nor; genitive: Normae

Initially Norma et Regula, L. translation of l'Équerre et la Règle "the Set Square and the Ruler," as named by Abbé Nicolas Louis de Lacaille (1713-1762).

Guniyâ "carpenter's square," probably related to konj "angle, corner, confined place" (variants xong "corner, angle," Tabari kânj, Kurd. kunj, Hamadâni kom) and zânu "knee" (Av. žnu-), Skt. kona- "angle, corner," Gk. gonia "angle,", gony "knee," L. genu "knee," cuneus "a wedge," Albanian (Gheg dialect) kân "angle, corner," Albanian (Toks) kënd "angle, corner;" PIE base PIE base *g(e)neu-.

normal
  ۱) هنجارور، هنجارمند؛ ۲) هنجار   
1) hanjârvar, hanjârmand; 2) hanjâr;

Fr.: 1) normal; 2) normale   

1) Conforming to the usual standard, type, custom; not abnormal; regular; natural.
2a) Math.: A perpendicular, particularly a line perpendicular to the tangent of a curve or curved surface at the point of contact of the tangent with the curve or the curved surface. See also → perpendicular; → vertical.
2b) Optics: A line drawn perpendicular to the surface of a reflecting or refracting medium.

From L.L. normalis "standing at right angle, in conformity with rule," from L. normalis "made according to a carpenter's square," from norma "rule, pattern," literally "carpenter's square."

Hanjârvar, hanjârmand, adjectives of hanjâr, → norm.

normal dispersion
  پاشش ِ هنجارمند   
pâšeš-e hanjârmand

Fr.: dispersion normale   

The dispersion in which a shorter wavelength is associated with a higher → refractive index. Contrasted with the → anomalous dispersion.

normal; → dispersion.

normal distribution
  واباژش ِ هنجارور   
vâbâžeš-e hanjârvar

Fr.: distribution normale   

A theoretical frequency distribution for a set of variable data, usually represented by a bell-shaped curve with a mean at the center of the curve and tail widths proportional to the standard deviation of the data about the mean. Same as → Gaussian distribution.

normal; → distribution.

normal state
  حالت ِ هنجارور   
hâlat-e hanjârvar

Fr.: état fondamental   

Of an atom, the same as → ground state.

normal; → state.

normality
  هنجاروری   
hanjârvari

Fr.: normalité   

General: The fact or condition of being normal.
Chemistry: Measure of the number of gram-equivalent weights of a compound per liter of solution.

From → normal + → -ity.

<< < -es -iv -ti 21- A r abe abs abs acc acc acc act act ada adi adu aff age alc Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app aps arc Arg ari art ass ast ast ast atm ato att aur aut axi B r bac Bal Bar Bar Bay bec Ber Bet Bie bij bin bio bis bla bla blu blu bol Bor bou Bra bre bro Bug C-s cal Cam can car Car Cas cat cav cel cen cer Cha cha cha che cho cir cir cir cla clo clo clu coa coe coh col col col com com com com com com com com com con con con con con con con con con con con coo cor cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl dar dat daw de- Deb dec dec dee def deg del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis div dog Dop dou dra dua dus dwa dyn e-m ear ecl eco eff ein Ein elb ele ele ele ele Els emi emp ene enr env epi equ equ Eri est Euc eva evo exc exc exh exo exp exp ext ext f-n Fah fam fau fee Fer fib fil fin fir fix fle flu foc for for for fra fre fre fri fun fuz gal gal gal Gan gau GCN gen geo geo geo geo Gl glo gra gra gra gra gra gre gro GW1 hab hal han HAR haz hea hel hel Hen Her heu Hig Hil hol hop hor hou Hub Hum Hyd hyd hyd hyp hys ide ign ima imp imp inc inc ind ine inf inf inf inh INP ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jos Jun K2 Kep key kin Kol lag lam Lan lar las lav lea leg len lev lig lim lin lin lin lis lob loc log lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal mar mas mas mat max mea mea mee Men mer met met met mic mid Mil min Mir mix mod mod mol mon Mor mou mul muo mys nan nat nav nec Nep neu New New NGC nob nom non non nor not nuc nuc num Nyq obj obs obs oce oen OH omn opa ope opt opt opt orb ord Ori ort osc out ove oxy pal pan par Par par par pas pea Pen per per per per per pet pha pho pho pho phy pie Pit Pla pla pla pla ple Poi pol pol pol pol pop pos pos pow pre pre pre Pre pri pri pri pro pro pro pro pro pro Pro pub pul pyr qua qua qua qua Qui rad rad rad rad rad rad ram ran rat rea rec rec rec red ref ref reg reg rel rel rem rep res res res ret rev rho Rie rim riv rol Ros rot rul S a Sah san Sat sca Sch Sch scr sec sec sec sei sel sem sep set sha she sho sid sig sil sim sin sit sky slu sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spl spr sta sta sta sta sta ste ste sti sto str str sub sub sub sug sun sup sup sup sup sur syl syn sys tal Tay tel ten ter tex the the the thi tho thu tid tim tod top tot tra tra tra tra tri tri tro tru tur twi Typ UFO ult unc uni uni uni upg ura uti val var vec vel ver ver vig vir vis voc von wak Was wav wax wea wei whi Wie win WN6 wom X-r yel you zer zod > >>